From the excellent Ancient Vaults & Eldritch Secrets-An oldschool gaming blog, comes an interesting item which I decided to refit into Ars Magica.
The Coin of the Wolf – by Ancient Vaults (on May 10th 2017) writes the item as a D&D magical item:
‘Are you going to lose that thing?’ Chalk asked Valance as the two adventurers strolled down the uneven cobblestones of Ird.
‘I intended to lose this coin and a few others if indeed Jarks is going into the deep woods in a few days,’ the priest of the Spider God said with a smile.
‘It isn’t like you to willingly lose, can’t you just drop it on his person?’ the wizard asked.
‘Too risky with all of his goons around, besides, spiders will lead us to the bodies to fetch the coins,’ Valance replied.
Chalk nodded as he saw a trio of chickens skitter nervously out of their path.
Forged by a dwarven forge-master at the request of a mischievous druid the Coin of the Wolf has lead to some interesting and sometimes unfortunate situations, almost all of which have been totally unexpected, except for that one strange fellow that defiantly carried one of these everywhere….
Benefit: This magical coin causes the one bearing it to give off the scent of an alpha wolf to all animals around. Domestic animals will panic when within 30′ of the bearer of the strange coin, attempting to flee whenever possible. Creatures of Animal to Semi- Intelligence (1-4) with 4HD or more that have aggressive natures will attack the one with the cursed coin 80% of the time. Even after getting rid of this dread item the effects last for one hour afterward.
For Ars magica it can be created as a basic MuIm device & effect.
Coin of the Wolf (Muto Imagonem 10, as CrIm base 1 to modify one sense, +1 Touch, +2 Sun, +1 moving image. Then device mods: +5 for 24x uses per day). Changes the target’s scent of an alpha male wolf. Device requires a pawn of vis to create.